(n.) Brazen boldness; presumptuousness; impudence or boldness in confronting or in transgressing the bounds of duty\ or decorum; insulting presumptuousness; shameless boldness; barefaced assurance.

arrogance assurance audacity boldness brashness brass brazenness bumptiousness cheek confidence contumely crust face gall hardihood hubris impertinence impudence insolence nerve obtrusiveness overweening overweeningness presumption presumptuousness procacity pushiness self-assurance self-confidence temerity uppishness uppityness